[Athens] | [Greece] | [cthomadak@med.uoa.gr]

EDUCATION

Bachelor's Degree in Mathematics, National and Kapodistrian University of Athens, Greece, 2006-2012
Master's Degree in Biostatistics, School of Medicine and Department of Mathematics, National and Kapodistrian University of Athens, Greece, 2012-2015
Ph.D. Dissertation, Department of Hygiene, Epidemiology, and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, 2016-2022

Work experience

[2015] – [Present] [Biostatistical Research Associate] | [Department of Hygiene, Epidemiology, and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens] | [Athens]

[2022] – [2023] [University Scholar (Adjunct lecturer)] | [University of Piraeus] | [Greece]

[2023] – [2024] [Adjunct lecturer] | [Athens University of Economics and Business] | [Greece]

Research interests

Joint modelling of longitudinal and survival data
Longitudinal data analysis
Missing data
Survival Analysis
Bayesian multiparameter evidence synthesis
Bayesian Statistics
HIV epidemiology
HCV epidemiology

Awards and Publications

16 publications in international journals of Biostatistics/Statistics and Epidemiology. Selected recent publications:
Thomadakis, C, Gountas I, et al. Prevalence of chronic HCV infection in EU/EEA countries in 2019 using multiparameter evidence synthesis. The Lancet Regional Health – Europe. 2023 The Lancet Regional Health – Europe. 2023
Thomadakis, C, Pantazis, N, Touloumi, G. Issues with the expected information matrix of linear mixed models provided by popular statistical packages under missingness at random dropout. Statistics in Medicine. 2023 Statistics in Medicine. 2023
Christos Thomadakis, Constantin T Yiannoutsos, Nikos Pantazis, Lameck Diero, Ann Mwangi, Beverly S Musick, Kara Wools-Kaloustian, Giota Touloumi, The Effect of HIV Treatment Interruption on Subsequent Immunological Response, American Journal of Epidemiology, Volume 192, Issue 7, July 2023
Christos Thomadakis, Loukia Meligkotsidou, Constantin T Yiannoutsos, Giota Touloumi, Joint modeling of longitudinal and competing-risk data using cumulative incidence functions for the failure submodels accounting for potential failure cause misclassification through double sampling, Biostatistics, Volume 25, Issue 1, January 2024, Pages 80–97, https://doi.org/10.1093/biostatistics/kxac043
Hellenic Award (“Eleneio”) for the Best Ph.D. Thesis in Statistics for Greek doctoral candidates for the period 2021-2022 (1/1/2021-31/12/2022), "35th Panhellenic and 1st International Conference on Statistics 'Statistics in Health Sciences.'"
Award in the doctoral candidate competition of the Annual Conference of the International society of Clinical Biostatistics (ISCB), Birmingham, UK, 2016. Paper: "Longitudinal and time-to-drop-out joint models can lead to seriously biased estimates when the drop-out mechanism is at random.".
Award in the doctoral candidate competition of the International Biometrics Society's Eastern Mediterranean Region Conference (EMR-IBS) in 2017. Paper: "Misspecifying the covariance structure in a linear mixed model under MAR dropout."